Different species should be selected and different cultivation methods used. The field is grown mainly in autumn, followed by winter celery and spring celery. The summer and autumn seasons should also be cultivated. The use of protected areas largely allows annual production. Rotation with non-elementary crops for more than 2-3 years. You can do it with cucumbers, beans, eggplants。
Ground and base fertilizer application
For each acre, 5,000 kg of rotable organic fertilizer, 100 kg of calcium perphosphate, 100 kg of plant ash or 10 kg of potassium sulphate, 20 kg of urea, 0. 5-0. 7 kg of borosa are applied. After fertilization, the manure is increased to 20-30 centimetres deep, allowing the manure to be fully mixed with the soil and dredged to 1-1. 2 metres of flat tungsten。
Seeding
Seeds are immersed for 10 minutes at 60-70 °c, 15-20 °c in cold water for 12 hours and 15-20 minutes with germinate 3-4 days °c. Most seeds are ready to plant seed beds after they have sprouts: the application of 0. 5 kg of calcium phosphate, 1. 5 kg-2. 5 kg of plant ash and 0. 5 kg of ammonium sulphate in 1 square metre of nursery beds, mixing of fertilizers and soil to level the boundary. It would be preferable to use a pallet or a caveboard。
The seedbeds should be filled with bottom water, seeds with fine sand or cabbage seeds and soil thickness of 0. 5 cm. In the high-temperature season, which takes place in the dark or in the evening, seeding is followed by the covering of the light net in the seedbed; in the low-temperature season, seeding should be carried out in the middle of the day, followed by plastic sheeting。
The seeding period should remove the cover, remove the mixed seedlings of large cabbage and keep the soil wet. In high-temperature seasons, water is to be poured out sooner or later, and wells are to be cooled in a timely manner after thunderstorms; and in the early mornings of the sunny season. 1-2 times, with a distance of 3 centimetres and urea watering of three real leaves at 7-10 kg/acre。
Temperature is 15-20°c during the day and 10-15°c at night. During the cold seasons, the temperature is gradually reduced to 5° c°c and 2°c autumn celery of 40 - 50 d; celery for winter periods of 60 - 70 days; celery for springs of 50 - 60 days; morning and spring sheds of 80 days; and cultivation in solar greenhouses of 60 days。
Plantation
Cultivation density of the celery species: dens ranging from 13 to 15 cm, with 2 to 3 cm each, or single, with a distance of 10 cm; cleavage planting, with a distance of 60 to 66 cm and dens ranging from 10 to 13 cm, with 3 to 4 cm each。
Protected areasCelery growingThe density is 15 to 20 cm; the field is cultivated at a distance of 30 cm and 25 cm; and the range is 33 to 45 cm. They're all monocultured. High-temperature seasons are suitable for planting in the middle of the day or evening, and in the middle of the day. Trees are planted deep in the neck, and winter celery is deeper。
Field management
Fertilisation and moisture management take 15-20 days to slow down the seeding period. After planting in high-temperature seasons, a small amount of water should be used on a regular basis to keep the soil humid; in the low-temperature season, the soil should be pine in time. The new leaf begins to grow after the slow seeding, combining the slow seedling with irrigation water, with 5-8 kg of urea per acre。
After a slow seedling, the water is watered once, 10-15 days. During this period, one or two plantings were performed at a depth of 3 cm。
When the temperature is 4-5°c in the next spring, clean the garden and pour green water. When the leaves begin to grow up straight, they end up incubation, water in a timely manner and keep the soil wet and water every 3-4 days. The first can be 15-20 kg per acre of ammonium sulphate, 10 kg each for potassium sulphate and calcium per phosphate, 750 - 1000 kg of manure for manure, 10 - 15 days for manure. The celery harvest period was 7-10 days in storage and water was stopped。
Carbon dioxide fertilizer for protected land-planted crops。
When plants grow to 5 cm high, they start to soften when the weather cools. When fully watered, the soil should be cultivated in the bright afternoons of the sun. Every time a leaf is not laid in the hearts, the earth shall be small. The total thickness is 17-20 cm。
Temperature management is 20-22°c during the day, 13-18°c at night and 15-20°c in the soil. When the plant is at a height of 50-60 centimetres, leaves can be harvested or harvested once. Or remove the roots for planting storage。
